Home    Stinson    Aeronca                                                                                                                  ... by John Baker

This page contains information of a technical nature for Aeronca enthusiasts. 

Type Certificate Data Sheets - official specifications for aircraft from the FAA. In PDF format, requires Adobe Acrobat Reader.

• A-759 - The Type Certificate Data Sheet for 7 Series aircraft.   Added 8/30/05, Updated 1/30/10.
• A-761 - The Type Certificate Data Sheet for 11 Series aircraft.  Added 8/30/05, Updated 1/30/10.
• A-796  - The Type Certificate Data Sheet for the 11CC Super Chief.  Added 3/14/10.
• A-675 - The Type Certificate Data Sheet that covers several pre-war Aeroncas, including the 65-CA Super Chief.  Added  10/13/06, Updated 1/30/10.
• A-702 - The Type Certificate Data Sheet that covers severak pre-war Aerondcas, including the  50L, the 50LA, the 65L and the 65LB (L-3G).  Added 3/14/10.
• A-802 - The Type Certificate Data Sheet for 15AC Sedan.   Added 10/13/05, Updated 1/30/10.

Tech Info:

• Advisory Circular 23-27 - FAA guidance on parts and materials substitution for vintage aircraft. Added 7/17/09.
• Continental Service Bulletin SB3-03.  Differential Pressure Test and Borescope Inspection Procedures for Cylinders.  Current procedures for a compression check, supersedes M84.15.  Added 2/21/10.
• Continental Service Information Letter SIL99-2B - Current listing of sealants, lubricant, & adhesives authorized by Teledyne Continental Motors.  Need to know what oils are approved for the Continental engine in your Aeronca?  Here's the official data.  Added 9/8/07.
• FAA Records on Individual Aircraft - Copies of records are now available on CD-ROM. Added 12/14/02.
• FAA Policy Statement on Shoulder Harness Retrofits - A recent policy permits the installation of shoulder harnesses in older aircraft as a "minor change."  Added 9/21/06.
• Brake Cables - do you have the correct brake cable on your Champ or Chief?  An improper cable could cause an embarrassing moment.  Here's info on what to look for.  Added 3/11/01, Updated 10/27/04.
• Goodyear Brake Return Springs.  The Goodyear mechanical disc brakes on many of our Aeroncas require some special care.  One area of interest is the return spring that pulls the puck away from the disk when the brakes are released.  A stronger spring allows the brakes to be adjusted so that the puck sits closer to the disc in the released position, improving performance when the brakes are applied.  Here are photos of two different types of return springs.  The spring in Photo #1 does the better job of keeping the puck away from the disc when released. Both photos (and the information) are courtesy of Richard Starr.  Photo #3 shows the spring on my Chief, N86176, the same type of spring as in photo #1. This photo is taken from the front, with the wheel and disk removed.

  Brake Spring Photo 1
  Brake Spring Photo 2
  Brake Spring Photo 3

   

• Goodyear Brake Adjustment - a copy of the article on Goodyear Brake adjustment that appeared in Joe Dickey's Aeronca Aviator newsletter, Issue No. 15.  Autumm, 1985.  Back issues of the original newsletters are now available from the Aeronca Aviators Club. Added 9/18/06, updated 6/29/09.
• Oleo Strut Maintenance - is your Aeronca on the level?  If not, maybe you need  to replace an oleo strut spring.  Here's how. Added 5/5/02; Updated 5/17/10.
• Goodyear Brake Pads.  The round pucks for the Goodyear mechanical brakes are hard to find.  Some make their own from truck brake pad material.  The pucks are 1.25" in diameter.  Each side uses one thin (.125" thickness) and one thick (.375").  Added 4/27/09.
• Penetrating Oil.  Machinists Magazine reports that an effective penetrating oil for removing rusted bolts and screws is a 50/50 mix of acetone and automatic transmission fluid.  This homebrew proved better than commercial products such as Liquid Wrench and Kroil.  Added 3/31/10.